/* ============================================================
   SURAJ SHIKSHA — Prototype Stylesheet
   Mobile-first · No frameworks · Plus Jakarta Sans
   Sections:
   01 Tokens  02 Base  03 Utilities  04 Topbar/Header/Drawer
   05 Hero    06 Stats 07 Classes   08 Why   09 Study Kit
   10 Testimonials 11 CTA 12 Contact 13 Footer
   14 Study page  15 Animations
   ============================================================ */

/* ---------- 01 Tokens ---------- */
:root{
  --brand:#f4611e;
  --brand-2:#ff8a3d;
  --brand-grad:linear-gradient(93deg,#ff6a2b,#f4481f);
  --ink:#171f36;
  --muted:#5b6478;
  --bg:#fbf7f2;
  --card:#ffffff;
  --line:#ece4da;
  --blue:#2563eb;
  --blue-soft:#e8f0ff;
  --green:#0e9f6e;
  --green-soft:#e2f6ee;
  --amber:#b45309;
  --amber-soft:#fdf0dc;
  --violet:#7c3aed;
  --violet-soft:#f1eaff;
  --r-card:18px;
  --r-btn:12px;
  --shadow-sm:0 1px 2px rgba(23,31,54,.06),0 4px 14px rgba(23,31,54,.06);
  --shadow-md:0 2px 6px rgba(23,31,54,.07),0 14px 34px rgba(23,31,54,.10);
  --shadow-brand:0 8px 22px rgba(244,97,30,.32);
  --ease:cubic-bezier(.22,.7,.3,1);
}

/* ---------- 02 Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{
  margin:0;
  font-family:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.22;margin:0 0 .5em;font-weight:800;letter-spacing:-.015em}
p{margin:0 0 1em}
sup{font-size:.62em}
:focus-visible{outline:3px solid rgba(244,97,30,.45);outline-offset:2px;border-radius:6px}

/* ---------- 03 Utilities ---------- */
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 18px}
.section{padding:52px 0}
.section-alt{background:#f6efe7;background:linear-gradient(180deg,#f8f2ea,#fbf7f2)}
.section-head{max-width:620px;margin:0 auto 30px;text-align:center}
.eyebrow{
  display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.12em;
  text-transform:uppercase;color:var(--brand);margin-bottom:10px;
}
.grad-text{background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-sm)}
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;
  background:var(--amber-soft);color:var(--amber);font-weight:700;font-size:.85rem;
  border:1px solid #f3ddb7;margin-bottom:16px;
}
.tag{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.68rem;font-weight:800;letter-spacing:.06em}
.tag-quiz{background:var(--blue-soft);color:var(--blue)}
.tag-notes{background:var(--green-soft);color:var(--green)}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-btn);border:none;cursor:pointer;
  font:inherit;font-weight:700;font-size:.95rem;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:var(--shadow-brand)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(244,97,30,.42)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-soft{background:var(--amber-soft);color:var(--amber)}
.btn-soft:hover{background:#fbe4c2}
.btn-whatsapp{background:#0e9f6e;color:#fff;box-shadow:0 8px 20px rgba(14,159,110,.28)}
.btn-whatsapp:hover{transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.btn-lg{padding:14px 26px;font-size:1rem}
.btn-block{width:100%}
.btn-icon{padding:11px 12px}

/* ---------- 04 Topbar / Header / Drawer ---------- */
.topbar{background:var(--ink);color:#dfe4f2;font-size:.8rem;text-align:center;padding:8px 14px}
.topbar a{color:#ffb38a;font-weight:700;text-decoration:underline;text-underline-offset:3px}

.header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,252,248,.82);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:border-color .25s,box-shadow .25s;
}
.header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(23,31,54,.07)}
.nav{display:flex;align-items:center;gap:14px;height:68px}
.brand{display:flex;align-items:center;gap:10px;margin-right:auto;min-width:0}
.brand-mark{
  width:50px;height:50px;flex:none;border-radius:12px;display:grid;place-items:center;
  background:transparent;color:#fff;box-shadow:var(--shadow-brand);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-text strong{font-size:1rem;font-weight:800}
.brand-text small{font-size:.7rem;color:var(--muted);font-weight:600}
.nav-links{display:none}
.nav-cta{display:flex;align-items:center;gap:8px}
.nav-cta .btn-primary{display:none}
.nav-toggle{
  display:grid;place-items:center;width:42px;height:42px;border-radius:11px;
  background:var(--card);border:1.5px solid var(--line);color:var(--ink);cursor:pointer;
}
.nav-toggle:active{transform:scale(.94)}

/* Drawer */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(23,31,54,.45);z-index:90;
  animation:fadeIn .25s var(--ease);
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:95;
  background:var(--card);padding:18px;display:flex;flex-direction:column;gap:18px;
  box-shadow:-18px 0 50px rgba(23,31,54,.18);
  transform:translateX(105%);visibility:hidden;
  transition:transform .32s var(--ease),visibility .32s;
}
.drawer.is-open{transform:none;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;font-size:1.05rem}
.drawer-links{display:flex;flex-direction:column;gap:4px}
.drawer-links a{
  padding:13px 14px;border-radius:12px;font-weight:700;font-size:1rem;
  transition:background .15s;
}
.drawer-links a:hover,.drawer-links a:active{background:var(--amber-soft)}
.drawer-cta{margin-top:auto;display:flex;flex-direction:column;gap:10px}

/* ---------- 05 Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:44px 0 30px;
  background:
    radial-gradient(46rem 30rem at 112% -8%,rgba(255,138,61,.20),transparent 62%),
    radial-gradient(38rem 26rem at -14% 6%,rgba(37,99,235,.10),transparent 60%);
}
.hero-grid{display:flex;flex-direction:column;gap:38px}
.hero-copy h1{font-size:clamp(1.9rem,6.4vw,3.4rem);margin-bottom:.45em}
.lead{color:var(--muted);font-size:clamp(1rem,2.6vw,1.13rem);max-width:46ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0 18px}
.hero-trust{display:flex;align-items:center;gap:10px;font-size:.9rem;color:var(--muted);flex-wrap:wrap}
.stars{color:#f5a623;letter-spacing:2px;font-size:.95rem}

/* Hero visual card stack */
.hero-visual{position:relative;min-height:300px;display:grid;place-items:center}
.hv-blob{
  position:absolute;inset:12% 6%;
  background:var(--brand-grad);opacity:.12;border-radius:46% 54% 55% 45%/48% 46% 54% 52%;
  filter:blur(6px);animation:blobFloat 9s ease-in-out infinite;
}
.hv-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-md);padding:16px 18px;
}
.hv-quiz{width:min(330px,100%);animation:float1 6s ease-in-out infinite}
.hv-quiz-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.hv-timer{font-size:.8rem;font-weight:800;color:var(--blue);background:var(--blue-soft);padding:3px 10px;border-radius:999px}
.hv-quiz strong{font-size:1.02rem}
.hv-quiz p{margin:2px 0 10px;font-size:.8rem;color:var(--muted)}
.hv-progress{height:9px;border-radius:99px;background:#f0e8dd;overflow:hidden}
.hv-progress span{display:block;height:100%;width:0;border-radius:99px;background:var(--brand-grad);transition:width 1.4s var(--ease) .5s}
.in .hv-progress span{width:70%}
.hv-quiz small{display:block;margin-top:8px;font-size:.74rem;color:var(--muted)}
.hv-notes{
  position:absolute;right:2%;top:-4%;width:210px;animation:float2 7s ease-in-out infinite;
}
.hv-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.hv-chips span{font-size:.72rem;font-weight:700;background:#f7f1e8;border:1px solid var(--line);padding:4px 9px;border-radius:999px}
.hv-score{
  position:absolute;left:0;bottom:-6%;text-align:center;padding:14px 22px;
  animation:float3 8s ease-in-out infinite;
}
.hv-score strong{font-size:1.7rem;background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hv-score small{display:block;font-size:.7rem;color:var(--muted);font-weight:700}

/* ---------- 06 Stats ---------- */
.stats{
  margin-top:40px;display:grid;grid-template-columns:repeat(2,1fr);gap:10px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);padding:18px 14px;
}
.stat{text-align:center;padding:10px 6px}
.stat+.stat{border-left:1px solid var(--line)}
.stat:nth-child(3){border-left:none}
.stat strong{display:block;font-size:clamp(1.5rem,5vw,2rem);font-weight:800;letter-spacing:-.02em}
.stat span{font-size:.78rem;color:var(--muted);font-weight:600}

/* ---------- 07 Classes ---------- */
.class-grid{display:grid;grid-template-columns:1fr;gap:14px}
.class-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-sm);transition:transform .25s var(--ease),box-shadow .25s,border-color .25s;
}
.class-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#f3cdb4}
.cc-icon{font-size:1.5rem;display:inline-grid;place-items:center;width:52px;height:52px;border-radius:14px;margin-bottom:12px}
.cc-1{background:var(--green-soft)}.cc-2{background:var(--blue-soft)}
.cc-3{background:var(--amber-soft)}.cc-4{background:var(--violet-soft)}
.class-card h3{font-size:1.12rem;margin-bottom:4px}
.class-card p{font-size:.9rem;color:var(--muted);margin:0}
.cc-badge{
  position:absolute;top:14px;right:14px;font-size:.66rem;font-weight:800;letter-spacing:.05em;
  background:var(--brand-grad);color:#fff;padding:4px 10px;border-radius:999px;
}

/* ---------- 08 Why ---------- */
.quote{
  margin:0 auto 30px;max-width:640px;text-align:center;
  background:linear-gradient(135deg,#fff4dd,#ffe9c7);border:1px solid #f3ddb0;
  border-radius:var(--r-card);padding:22px 24px;
}
.quote p{margin:0;font-size:clamp(.98rem,2.6vw,1.12rem);font-weight:600;line-height:1.65;color:#4a3208}
.why-grid{display:grid;grid-template-columns:1fr;gap:14px}
.why-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-sm);transition:transform .25s var(--ease),box-shadow .25s;
}
.why-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.wc-icon{font-size:1.35rem;display:inline-grid;place-items:center;width:46px;height:46px;border-radius:12px;background:#f7f1e8;margin-bottom:10px}
.why-card h3{font-size:1.02rem;margin-bottom:6px}
.why-card p{font-size:.88rem;color:var(--muted);margin:0}

/* ---------- 09 Study Kit (home) ---------- */
.kit-grid{display:grid;grid-template-columns:1fr;gap:14px}
.kit-card{
  display:flex;flex-direction:column;gap:6px;position:relative;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-sm);
  transition:transform .25s var(--ease),box-shadow .25s,border-color .25s;
}
.kit-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#f3cdb4}
.kc-icon{font-size:1.5rem;display:inline-grid;place-items:center;width:52px;height:52px;border-radius:14px;margin-bottom:8px}
.kc-book{background:var(--blue-soft)}.kc-notes{background:var(--green-soft)}
.kc-ws{background:var(--amber-soft)}.kc-quiz{background:var(--violet-soft)}.kc-pyq{background:#fdecec}
.kit-card h3{font-size:1.08rem;margin:0}
.kit-card p{font-size:.86rem;color:var(--muted);margin:0}
.kc-count{
  margin-top:12px;align-self:flex-start;font-size:.74rem;font-weight:800;
  background:#f7f1e8;border:1px solid var(--line);color:var(--muted);
  padding:4px 11px;border-radius:999px;
}
.kit-card::after{
  content:"→";position:absolute;right:18px;top:22px;font-weight:800;color:#c9bfae;
  transition:transform .25s var(--ease),color .25s;
}
.kit-card:hover::after{transform:translateX(4px);color:var(--brand)}

/* ---------- 10 Testimonials ---------- */
.t-row{
  display:grid;grid-auto-flow:column;grid-auto-columns:82%;gap:12px;
  overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;
  scrollbar-width:thin;-webkit-overflow-scrolling:touch;
}
.t-row::-webkit-scrollbar{height:6px}
.t-row::-webkit-scrollbar-thumb{background:#e3d9c9;border-radius:99px}
.t-card{
  margin:0;scroll-snap-align:center;display:flex;flex-direction:column;gap:10px;
  background:var(--card);border:1px solid var(--line);border-left:5px solid var(--brand);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-sm);
}
.t-avatar{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  color:#fff;font-weight:800;font-size:.9rem;background:var(--a,var(--brand));
}
.t-card blockquote{margin:0;font-size:.93rem;line-height:1.6}
.t-card figcaption{display:flex;flex-direction:column}
.t-card figcaption strong{font-size:.92rem}
.t-card figcaption span{font-size:.76rem;color:var(--muted)}

/* ---------- 11 CTA banner ---------- */
.cta-banner{background:var(--ink);color:#fff;padding:46px 0;position:relative;overflow:hidden}
.cta-banner::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(30rem 18rem at 88% -20%,rgba(255,138,61,.35),transparent 65%),
    radial-gradient(24rem 16rem at 4% 120%,rgba(37,99,235,.25),transparent 60%);
}
.cta-inner{position:relative;display:flex;flex-direction:column;gap:22px}
.cta-inner h2{margin-bottom:2px}
.cta-inner p{margin:0;color:#c3cade}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 12 Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:26px;align-items:start}
.contact-list{list-style:none;margin:18px 0;padding:0;display:flex;flex-direction:column;gap:14px}
.contact-list li{display:flex;gap:12px;align-items:flex-start;font-size:.95rem}
.cl-icon{flex:none;display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--amber-soft);font-size:1.1rem}
.contact-list a{color:var(--brand);font-weight:700}
.contact-actions{display:flex;flex-wrap:wrap;gap:10px}
.contact-form{padding:24px}
.contact-form h3{font-size:1.15rem;margin-bottom:16px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:.82rem;font-weight:700}
.field label small{color:var(--muted);font-weight:500}
.field input,.field select,.field textarea{
  font:inherit;font-size:.95rem;padding:12px 14px;border-radius:12px;
  border:1.5px solid var(--line);background:#fffdf9;color:var(--ink);
  transition:border-color .15s,box-shadow .15s;width:100%;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(244,97,30,.14);
}
.field-row{display:grid;grid-template-columns:1fr;gap:0}
.form-msg{min-height:1.4em;margin:10px 0 0;font-size:.88rem;font-weight:700;text-align:center}
.form-msg.ok{color:var(--green)}
.form-msg.err{color:#d43a2f}

/* ---------- 13 Footer ---------- */
.footer{background:var(--ink);color:#b9c1d6;padding:44px 0 0;font-size:.9rem}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px;padding-bottom:32px}
.f-brand{color:#fff;font-size:1.05rem;display:inline-block;margin-bottom:8px}
.footer-grid p{margin:0;max-width:34ch;line-height:1.7}
.footer-grid h4{color:#fff;font-size:.85rem;text-transform:uppercase;letter-spacing:.09em;margin-bottom:12px}
.footer-grid a{display:block;padding:4px 0;transition:color .15s}
.footer-grid a:hover{color:#ffb38a}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.12);padding-top:18px;padding-bottom:18px;font-size:.8rem;
}

/* ---------- 14 Study page ---------- */
.page-head{
  padding:36px 0 8px;
  background:
    radial-gradient(40rem 22rem at 110% -20%,rgba(255,138,61,.18),transparent 60%),
    radial-gradient(30rem 20rem at -10% 10%,rgba(37,99,235,.08),transparent 60%);
}
.breadcrumb{font-size:.8rem;color:var(--muted);margin-bottom:10px}
.breadcrumb a{color:var(--brand);font-weight:700}
.page-head h1{font-size:clamp(1.7rem,5.6vw,2.5rem);margin-bottom:4px}
.page-head p{color:var(--muted);margin-bottom:18px}
.search-box{
  display:flex;align-items:center;gap:10px;max-width:480px;
  background:var(--card);border:1.5px solid var(--line);border-radius:14px;
  padding:12px 16px;box-shadow:var(--shadow-sm);color:var(--muted);
  transition:border-color .15s,box-shadow .15s;
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(244,97,30,.14)}
.search-box input{
  flex:1;border:none;outline:none;background:transparent;font:inherit;font-size:.95rem;color:var(--ink);min-width:0;
}
.kit-browser{padding-top:26px}

.kit-tabs{
  display:flex;gap:8px;overflow-x:auto;padding:6px;margin:0 -6px 26px;
  -webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.kit-tabs::-webkit-scrollbar{display:none}
.kit-tab{
  flex:none;padding:10px 18px;border-radius:999px;font-weight:700;font-size:.9rem;
  background:var(--card);border:1.5px solid var(--line);color:var(--muted);
  transition:all .18s var(--ease);
}
.kit-tab:hover{border-color:#f0c9ac;color:var(--brand)}
.kit-tab.is-active{background:var(--brand-grad);border-color:transparent;color:#fff;box-shadow:var(--shadow-brand)}

.step-label{
  display:flex;align-items:center;gap:10px;font-weight:800;font-size:.95rem;
  margin:22px 0 12px;
}
.step-num{
  display:inline-grid;place-items:center;width:26px;height:26px;border-radius:9px;
  background:var(--ink);color:#fff;font-size:.78rem;
}
.chip-row{display:flex;gap:8px;overflow-x:auto;padding:2px 2px 8px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.chip-row::-webkit-scrollbar{display:none}
.chip{
  flex:none;padding:10px 20px;border-radius:999px;font:inherit;font-weight:700;font-size:.9rem;
  background:var(--card);border:1.5px solid var(--line);color:var(--ink);cursor:pointer;
  transition:all .18s var(--ease);
}
.chip:hover{border-color:#f0c9ac}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff}

.subject-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.subject-tile{
  display:flex;flex-direction:column;align-items:flex-start;gap:4px;text-align:left;
  background:var(--card);border:1.5px solid var(--line);border-radius:16px;
  padding:16px;cursor:pointer;font:inherit;
  transition:transform .2s var(--ease),border-color .2s,box-shadow .2s;
}
.subject-tile:hover{transform:translateY(-3px);border-color:#f0c9ac;box-shadow:var(--shadow-sm)}
.subject-tile.is-active{border-color:var(--brand);background:#fff8f3;box-shadow:0 0 0 3px rgba(244,97,30,.13)}
.st-icon{font-size:1.3rem;margin-bottom:4px}
.subject-tile strong{font-size:.95rem}
.subject-tile small{font-size:.72rem;color:var(--muted);font-weight:700}

.file-list{display:grid;grid-template-columns:1fr;gap:10px;margin-bottom:10px}
.file-item{
  display:flex;align-items:center;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:14px 16px;box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s,border-color .2s;
}
.file-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#f0c9ac}
.fi-icon{
  flex:none;display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
  font-size:1.15rem;background:var(--blue-soft);
}
.fi-icon.is-quiz{background:var(--violet-soft)}
.fi-icon.is-ws{background:var(--amber-soft)}
.fi-body{flex:1;min-width:0}
.fi-body strong{display:block;font-size:.93rem;line-height:1.35;overflow-wrap:anywhere}
.fi-body small{color:var(--muted);font-size:.74rem;font-weight:600}
.fi-action{
  flex:none;font-size:.78rem;font-weight:800;color:var(--brand);
  display:inline-flex;align-items:center;gap:5px;padding:8px 13px;border-radius:999px;
  background:var(--amber-soft);transition:background .15s,transform .15s;
}
.fi-action:hover{background:#fbe4c2;transform:translateX(2px)}
.empty-state{
  text-align:center;padding:44px 20px;border:1.5px dashed #e0d5c3;border-radius:var(--r-card);
  color:var(--muted);background:#fffdf9;
}
.empty-state .es-icon{font-size:2rem;display:block;margin-bottom:8px}
.empty-state strong{display:block;color:var(--ink);margin-bottom:4px}
.empty-state p{margin:0;font-size:.88rem}

/* ---------- 15 Animations ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}

@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes blobFloat{0%,100%{transform:rotate(0) scale(1)}50%{transform:rotate(8deg) scale(1.06)}}
@keyframes float1{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
@keyframes float2{0%,100%{transform:translateY(0) rotate(1.5deg)}50%{transform:translateY(-12px) rotate(-1deg)}}
@keyframes float3{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- Responsive: large phones ---------- */
@media (min-width:560px){
  .stats{grid-template-columns:repeat(4,1fr)}
  .stat+.stat{border-left:1px solid var(--line)}
  .stat:nth-child(3){border-left:1px solid var(--line)}
  .class-grid{grid-template-columns:repeat(2,1fr)}
  .kit-grid{grid-template-columns:repeat(2,1fr)}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .t-row{grid-auto-columns:60%}
  .subject-grid{grid-template-columns:repeat(3,1fr)}
  .field-row{grid-template-columns:1fr 1fr;gap:12px}
  .file-list{grid-template-columns:repeat(2,1fr)}
}

/* ---------- Responsive: tablet/desktop ---------- */
@media (min-width:900px){
  .section{padding:72px 0}
  .nav{height:78px}
  .nav-toggle{display:none}
  .nav-links{display:flex;align-items:center;gap:4px}
  .nav-links a{
    padding:9px 15px;border-radius:10px;font-weight:700;font-size:.92rem;color:#3d455c;
    transition:background .15s,color .15s;
  }
  .nav-links a:hover{background:var(--amber-soft);color:var(--brand)}
  .nav-links a.active{background:var(--brand-grad);color:#fff;box-shadow:var(--shadow-brand)}
  .nav-cta .btn-primary{display:inline-flex}
  .hero{padding:70px 0 50px}
  .hero-grid{flex-direction:row;align-items:center;gap:48px}
  .hero-copy{flex:1.1}
  .hero-visual{flex:1;min-height:400px}
  .t-row{grid-auto-columns:calc((100% - 36px)/3)}
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between}
  .contact-grid{grid-template-columns:1fr 1.05fr;gap:40px}
  .footer-grid{grid-template-columns:2fr 1fr 1fr 1fr;gap:36px}
  .kit-grid{grid-template-columns:repeat(3,1fr)}
  .why-grid{grid-template-columns:repeat(3,1fr)}
  .class-grid{grid-template-columns:repeat(4,1fr)}
}